A pre-roll dual-camera recorder whose FULL format fills the open Duo
Does Doubleback: Pre-Roll Dual Cam work on iPhone Duo?
Yes, the developer says so: Doubleback 1.0.2, released October 13, 2026, adds iPhone Duo support, with a FULL format that fills the open screen.
- App Store confirmedSaaSAI Holdings, the developer, in the App Store description and the release notes for version 1.0.2 (released October 13, 2026), which add iPhone Duo support and a FULL format laid out for the open screen.
Adapted for the fold
- Open · Inner display
The whole open screen
The FULL format uses the entire open display, with layouts made for it.
About Doubleback: Pre-Roll Dual Cam
Doubleback, from SaaSAI Holdings, keeps up to two minutes of footage from before you press record. It films with the front and rear cameras together and saves both clean originals and a combined clip.
Version 1.0.2 adds a FULL format for the open Duo. The release notes don’t say where the controls go or what happens to a recording when the phone folds.
Evidence reviews
What we checked, when, and what the evidence establishes. Each record preserves the support label at that check.
· App Store page reviewed
App Store confirmed · iphone-duo
The App Store release notes for version 1.0.2 (released October 13, 2026) mention iPhone Duo: "READY FOR iPHONE DUO A new FULL format fills the whole unfolded screen, with layouts made for it."
App version: 1.0.2.
Store text only: we haven't seen the app running, and the store page doesn't show how each pose is used.
View reviewed evidence ↗· Developer statement reviewed
Developer claimed · iphone-duo
Read the App Store description and the release notes for version 1.0.2, which add Duo support and a FULL format for the open phone. Version 1.0.2 is on the App Store, sold by SaaSAI Holdings LLC.
App version: 1.0.2.
The six App Store pictures show the usual iPhone camera and clip screens, with the Dynamic Island, not the app running on a Duo. The developer's site returned an error (HTTP 403). No build was tested.
View reviewed evidence ↗
Related guides
The best iPhone Duo apps so far (October 2026)
The apps worth installing now that iPhone Duo is on sale, from the apps Apple named as launch partners to indie apps whose developers have shown a real iPhone Duo layout, picked for what they do when you open the phone.
Do your apps work on iPhone Duo? What happens before they're updated
Every iPhone app opens on iPhone Duo, but only updated ones fill the inner display. What an app looks like before its developer adapts it, how to tell which are ready, and which popular apps have said so.
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